protective sleeve around the socket which is designed to prevent scratching and marring of your wheels during maintenanceFor maximum durability .This socket is specifically designed only for special "flower head" Mercedes lug nuts. NOT for standard 6-sided hex lug nuts or locking lug nuts.This lug nut wrench is designed to be used with ½-inch square drives, and can be used with hand, electric, or air tools.Colour:Black + redMaterial:metalSize:85*27mmPackage Contents:1* disassembly toolOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.